TDD and Sarevok freeze

[Edar Macilrille]

Now, I like mods, so I have installed TDD into the ToB game I started after Viconia's items became useless (see SoA forum). I also like Sarevok, Sarevok, Minsc, main character and to some extent Soulafein makes good tanks and I always liked tanks.

So, I have Sarevok in my party, and for some reason when he fights next to main character wielding Sanchoduko the Acid Katana in off hand. A strange event happens.
For some reason Sarevok makes some cold damage to main character, then Sanchoduko does acid damage to Sarevok. This is no problem, normally, for both can take lots of hits. But what happens is that Sarevok says, "Who is this Unseeing one?", then, "Excuse me, I must go.", then he dies and the game freezes with the characters stand around with no panels or text available. Game is running fine according to Task Manager, but nothing happens no matter what I do. This is a bit of a challenge, both are tanks and I like the two brothers Bhaal fighting next to each other, but reloading game all the time because this happens is... a pain in the proverbial and somewhat spoiling my fun.
Anybody has an idea what I can do to change this? It has also happened when hit by a firebomb from Yaga-Shura's trebutchets bombing Saradush.

I could of course use Shadowkeeper to set his acid resistance very high, but that is a bit cheesy.

BTW, should his Sword of Chaos not become more effective when given to him? This has not happened either.

Thanks a lot.